.a {
    background-color:black;
    color:white;
    text-align:center;
    padding:5px;
  }
  .b {
    overflow: hidden;
    color:#f2f2f2;
    background-color: rgb(72,72,72);
  }

  .b a {
    float: left;
    color: #f2f2f2;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
  }

  .b a:hover {
    background-color: #ddd;
    color: black;
  }

  .f {
    overflow: hidden;
    color:#f2f2f2;
    background-color: gray;
    height:740px;
    text-align:center;
      width:188px;
      float:right;
  }

  .f a {
    float: left;
    color: #f2f2f2;
    text-align: center;
    padding: 10px 70px;
    text-decoration: none;
  }

  .f a:hover {
    background-color: #ddd;
    color: black;
  }

  .c {
      line-height:30px;
      background-color:gray;
      color:white;
      height:700px;
      width:104px;
      float:left;
      padding:20px;
  }
  .d {
      width:350px;
      float:left;
      padding:10px;
  }
  .e {
      background-color:rgb(40,40,40);
      color:rgb(200,200,200);
      clear:both;
      text-align:center;
     padding:1px;
  }
  .e a {
    color: rgb(200,200,200);
    padding: 0px 0px;
    text-decoration: none;
  }
  .e a:hover {
    color: rgb(250,250,250);
  }